mediation
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C1 noun /ˌmiːdɪˈeɪʃən/

mediation

仲裁
Meaning
Intervention between parties to promote reconciliation, settlement, or compromise.
Example
The mediation helped resolve the conflict between the two teams.
その仲裁は二つのチーム間の対立を解決するのに役立ちました。
C1 noun /mɔːˈtæləti/

mortality

死亡率
Meaning
the state of being subject to death; the death rate of a population
Example
Advancements in medicine have reduced child mortality significantly.
医療の進歩により、乳児死亡率が大幅に減少しました。
C2 adjective /ˈmæk.jʊˌleɪ.tɪd/

maculated

斑点のある
Meaning
Spotted or stained; marked with blemishes.
Example
The maculated surface of the old mirror gave it a unique charm.
古い鏡の斑点のある表面は、独特の魅力を与えました。
C1 noun /ˈmɒnəˌθiːɪzəm/

monotheism

一神教
Meaning
The belief in the existence of only one God.
Example
Islam and Christianity are religions based on monotheism.
イスラム教とキリスト教は一神教に基づいている。
B2 noun /ˈmʌð.ər.lænd/

Motherland

母国; 出身地
Meaning
the country where one was born or has citizenship; homeland
Example
He always spoke fondly of his motherland.
彼はいつも自分の母国について愛情を込めて話していました。
C1 adjective /ˈmaɪ.ɡrə.tɔːr.i/

Migratory

移動性の
Meaning
moving from one place to another; characterized by seasonal movement
Example
Many birds are migratory and travel thousands of miles each season.
多くの鳥は移動性があり、毎シーズン数千マイルも飛ぶ。
A1 modal verb, noun /meɪ/

may

かもしれない / 五月
Meaning
Used to express possibility, permission, or uncertainty; also the name of the fifth month of the year.
Example
You may leave early if you finish your work.
もし仕事が終わったら、早く帰ってもいいですよ。
B1 noun /ˈmʌðər ˈlæŋɡwɪdʒ/

mother language

母語
Meaning
the first language a person learns from childhood; native language
Example
Children learn best when they are taught in their mother language.
子どもは母語で学ぶと最もよく理解する。
C1 noun /moʊld/

Mould

型（鋳型）
Meaning
a hollow container used to give shape to molten material; fungus
Example
She poured chocolate into the mould to make candies.
彼女はキャンディーを作るために型にチョコレートを流し込んだ。
C1 adjective ˈmær.ɪ.taɪm

Maritime

海事の
Meaning
Connected with the sea, especially in relation to seafaring commercial or military activity.
Example
Maritime trade enhances the economy.
海上貿易は経済を促進する。
B2 noun /ˈmeɪər/

mayor

市長
Meaning
The elected head of a city, town, or municipality.
Example
The mayor announced a new policy to improve public transport.
市長は公共交通機関を改善するために新しい政策を発表しました。
C2 adjective /mæɡˈnæn.ɪ.məs/

magnanimous

寛大, 気前が良い, 寛容
Meaning
Very kind and generous, especially towards a rival or someone less powerful than oneself.
Example
His magnanimous nature made him respected by all.
彼の寛大な性格は彼を皆から尊敬される存在にしました。
A2 noun /ˈmʌʃ.ruːm/

Mushroom

きのこ
Meaning
a type of fungus that can be eaten, often used in cooking
Example
The pizza was topped with fresh mushrooms.
ピザは新鮮なきのこで飾られていました。
B2 adverb /ˈmɒdərətli/

moderately

適度に
Meaning
to a reasonable extent, not excessively
Example
She exercises moderately to stay healthy.
彼女は健康を保つために適度に運動しています。
C2 noun /ˈmædrɪɡəl/

madrigal

Meaning
A short, lyrical poem set to music, typically from the Renaissance period.
Example
The choir performed a beautiful madrigal from the 16th century.
C1 adjective /moʊˈmentəs/

Momentous

重要
Meaning
of great importance or significance; having far-reaching consequences
Example
The signing of the peace treaty was a momentous occasion for both countries.
平和条約の署名は、両国にとって重要な出来事でした。
A1 noun /mæn/

man

男性
Meaning
an adult human male
Example
The man helped the child cross the street.
その男性は子供が通りを渡るのを手伝いました。
B1 noun /mæs/

mass

質量
Meaning
a large body of matter with no specific shape; a large number of people or things
Example
A huge mass of people gathered in the square.
広場に大勢の人々が集まりました。
B2 noun ˈmoʊ.baɪl sɪˈkjʊr.ə.ti

mobile security

モバイルセキュリティ
Meaning
Protection of mobile devices and the data stored on them from security threats.
Example
Strong mobile security protects personal information.
強力なモバイルセキュリティは個人情報を保護します。
C2 noun /ˈmæsəkɪst/

masochist

マゾヒスト
Meaning
a person who derives pleasure from their own pain or humiliation
Example
He was called a masochist for enjoying tough challenges.
彼は難しい挑戦を楽しんでいるため、マゾヒストと呼ばれました。
C2 noun /ˈmær.oʊ ʌv ˈplæn.tɪn triː/

Marrow of plantain tree

プランテンツリーの髄
Meaning
the soft inner part of the banana plant stem that is used as a vegetable in cooking
Example
The marrow of plantain tree is commonly used in traditional Bengali cuisine.
プランテンツリーの髄は、伝統的なベンガル料理で一般的に使用されます。
C2 adjective /ˈmiːliˌmaʊðd/

mealymouthed

言い逃れをする
Meaning
not willing to speak directly and honestly; evasive in speech
Example
The politician gave a mealymouthed response to the tough question.
その政治家は難しい質問に対して言い逃れをした。
A1 noun/verb /maɪnd/

mind

心 / 世話する
Meaning
the part of a person that enables them to think, feel, and reason; to pay attention or take care
Example
Please mind the gap between the train and the platform.
列車とプラットフォームの間の隙間に注意してください。
C1 adjective /məˈlɪʃəs/

Malicious

悪意のある; 有害な
Meaning
having or showing a desire to cause harm to someone; spiteful
Example
The malicious software damaged many computers.
悪意のあるソフトウェアが多くのコンピュータを破壊しました。
B2 noun /moʊˈmɛn.təm/

momentum

勢い
Meaning
The quantity of motion of a moving body; the impetus and driving force gained by the development of a process or course of events.
Example
The company gained momentum after launching a new product.
会社は新しい製品を発売した後、勢いを得ました。
B1 noun, verb /ˈmɜːrdər/

murder

殺人
Meaning
the unlawful killing of a person; to kill someone unlawfully and intentionally
Example
The detective investigated the murder that shocked the town.
探偵は町を驚かせた殺人事件を調査しました。
C1 adjective/noun nɪˈmɒn.ɪk

mnemonic

記憶術、記憶を助ける技術
Meaning
Assisting or intended to assist memory; a device or technique to aid memory.
Example
A mnemonic device helps students remember complex concepts.
ニーモニック装置は学生が複雑な概念を覚えるのに役立ちます。
A2 adjective /ˈmʌnθli/

monthly

月次
Meaning
happening, done, or published once a month
Example
Employees receive their salary on a monthly basis.
従業員は毎月給料を受け取ります。
B1 adjective /ˈmɑːrvələs/

marvelous

素晴らしい
Meaning
Causing great wonder or delight; extraordinary.
Example
She gave a marvelous performance on stage.
彼女はステージで素晴らしいパフォーマンスを披露しました。
C2 noun ˌmæɡnəˈnɪmɪti

magnanimity

寛大さ
Meaning
Generosity in forgiving an insult or injury; forbearance.
Example
His magnanimity towards his competitors was admirable.
彼の競争相手への寛大さは賞賛に値した。
B1 verb /ˈmɛʒər/

measure

測定する
Meaning
to determine the size, amount, or degree of something
Example
She measured the length of the table.
彼女はテーブルの長さを測定しました。
B2 noun /ˈmɪn.ɪ.stri/

Ministry

省庁
Meaning
A government department responsible for a particular area of public administration
Example
The Ministry of Education announced new policies for schools.
教育省は学校のための新しい政策を発表しました。
C1 noun mælˈnʌr.ɪʃ.mənt

malnourishment

栄養失調
Meaning
Lack of proper nutrition, caused by not having enough to eat, not eating enough of the right things, or being unable to use the food that one does eat.
Example
Children in poverty-stricken areas suffer from malnourishment.
貧困地域の子供たちは栄養失調に苦しんでいます。
C2 noun ˌmɛtəkɒɡˈnɪʃən

metacognition

思考について考える
Meaning
Awareness and understanding of one's own thought processes
Example
Metacognition enhances problem-solving abilities.
メタ認知は問題解決能力を高めます。
C2 verb /məˈrɔːd/

maraud

略奪する
Meaning
to roam in search of things to steal or attack
Example
The bandits marauded through the village at night.
バンディットたちは夜に村を略奪しました。
C2 noun /mɛnˈdæsəti/

mendacity

虚偽
Meaning
the tendency to be untruthful; dishonesty
Example
The journalist exposed the mendacity of the officials.
ジャーナリストは役人たちの虚偽を暴露しました。
B2 adjective/noun /ˈmaɪ.nər/

minor

小さい / 未成年
Meaning
less important, serious, or significant; a person under the legal age
Example
Luckily, the accident caused only minor injuries.
幸運にも、事故は軽いけがだけを引き起こしました。
C1 adjective /ˈmɒnstrəs/

Monstrous

非常に大きい; 衝撃的な悪または間違い; 異常または不自然
Meaning
extremely large; shockingly evil or wrong; abnormal or unnatural
Example
The monstrous crime shocked the entire community.
そのモンスターのような犯罪はコミュニティ全体を驚かせました。
C1 noun /ˈmaɪzər/

miser

けちん坊
Meaning
A person who hoards wealth and spends as little money as possible.
Example
The old miser refused to donate even a penny to charity.
その古いけちん坊は慈善団体に1ペニーも寄付することを拒否した。
B2 adverb /ˈmɪərli/

merely

ただ
Meaning
Only; nothing more than.
Example
She was merely trying to help.
彼女はただ助けようとしていました。
A2 noun /mæθ/

math

数学
Meaning
The study of numbers, quantities, and shapes, also called mathematics.
Example
She is very good at math.
彼女は数学が得意です。
A2 noun /mæp/

map

地図
Meaning
a drawing that shows the features of an area of land or sea
Example
He studied the map before starting his journey.
彼は旅を始める前に地図を調べました。
C1 adjective /ˈmjuːtɪd/

muted

muted (ミューテッド)
Meaning
softened in sound, color, or effect; subdued
Example
The room was painted in muted shades of blue and grey.
部屋は青と灰色の muted な色合いで塗られていました。
C1 noun /ˌmɑːr.kɪ.təˈbɪl.ə.ti/

marketability

市場性
Meaning
The possibility of commercial success for a product or service
Example
The new product's marketability depends on consumer demand.
新しい商品の市場性は消費者の需要に依存しています。
B1 noun /mɑːsks/

masks

マスク
Meaning
Coverings for all or part of the face, worn as a disguise, for protection, or for medical reasons.
Example
Masks can protect against polluted air.
マスクは汚染された空気から守ることができます。
B2 verb /ˌmænjʊˈfæktʃər/

manufacture

製造
Meaning
to produce goods in large quantities using machinery; to make or create something
Example
The company manufactures electronic devices for global markets.
その会社はグローバル市場向けに電子機器を製造しています。
A1 noun /miːt/

Meat

肉
Meaning
animal flesh used as food
Example
We bought fresh meat from the butcher shop.
私たちは肉屋から新鮮な肉を買いました。
C1 noun /ˌmɪsˈdiːd/

Misdeed

悪行; 不正行為
Meaning
A wicked or illegal act; wrongdoing
Example
He regretted his past misdeeds and tried to make amends.
彼は過去の悪行を後悔し、償いをしようとしました。
B2 adjective /mæɡˈnɛtɪk/

magnetic

磁気
Meaning
having the power to attract metal objects or to attract people or things in a strong way
Example
The magnetic field of the Earth protects us from harmful solar radiation.
地球の磁場は有害な太陽放射から私たちを守ります。
B1 noun ˈmɪlɪteri

military

軍隊
Meaning
The armed forces of a country.
Example
The military was called for assistance.
軍隊は援助のために呼ばれました。
B2 noun /ˈmɒtəʊ/

motto

モットー
Meaning
A short sentence or phrase that expresses a guiding belief or principle.
Example
Her motto in life is 'never give up.'
彼女の人生のモットーは「決して諦めないこと」です。
A1 modal verb/noun /maɪt/

might

かもしれない / 力
Meaning
used to express possibility; power or strength
Example
She might come to the party if she finishes work early.
もし彼女が早く仕事を終わらせたら、パーティーに来るかもしれない。
B2 noun /ˈmoʊ.tɪv/

Motive

動機; 理由; 刺激
Meaning
a reason for doing something; what drives someone to act
Example
The police are investigating the motive for the crime.
警察は犯罪の動機を調査しています。
C2 noun /ˈmɜːkinəs/

murkiness

濁り
Meaning
The quality of being dark, gloomy, or unclear.
Example
The murkiness of the water made it hard to see the fish.
水の濁りが魚を見るのを難しくしました。
A2 noun /ˈmoʊ.tər ˌsaɪ.kəl/

Motor Cycle

バイク
Meaning
a two-wheeled vehicle powered by an engine
Example
He rides his motorcycle to work every day.
彼は毎日バイクで仕事に行きます。
C1 verb /mɔːrf/

morph

変形する
Meaning
to change smoothly from one form, shape, or character into another
Example
The caterpillar will morph into a butterfly.
イモムシは蝶に変わるでしょう。
C2 verb /ˌmɪs.əˈtrɪb.juːt/

misattribute

誤って帰属する
Meaning
to incorrectly credit something, such as a work or remark, to the wrong person or source
Example
The quote was misattributed to Shakespeare.
その引用はシェイクスピアに誤って帰属されました。
C1 noun/adjective /ˈmæm.əθ/

mammoth

Meaning
An extinct large elephant-like animal with long curved tusks; also means something huge.
Example
The company faced a mammoth challenge during expansion.
C1 adjective /moʊv/

mauve

薄紫色
Meaning
a pale purple color with a grayish or bluish tinge
Example
She wore a beautiful mauve dress to the party.
彼女はパーティーで美しい薄紫色のドレスを着ていた。
A2 adjective /ˈmoʊbaɪl/

mobile

モバイル
Meaning
Able to move or be moved easily; also refers to portable communication devices.
Example
She prefers a mobile lifestyle that allows her to travel frequently.
彼女は頻繁に旅行できるモバイルライフスタイルを好みます。
C1 noun /mɔːrɡ/

morgue

Meaning
a place where dead bodies are kept, especially to be identified or claimed
Example
The police took the body to the morgue for identification.
C2 noun /mælˈfiːzəns/

malfeasance

公務員の不正行為
Meaning
Wrongdoing or misconduct, especially by a public official.
Example
The mayor was accused of malfeasance in office.
市長は職務中の不正行為で告発された。
C2 verb /mʌlkt/

mulct

罰金を科す / 詐欺を働く
Meaning
to punish by a fine or to defraud someone of money
Example
The corrupt official was mulcted for his misconduct.
腐敗した公務員は不正行為に対して罰金を科された。
B1 noun /mæsk/

Mask

マスク
Meaning
covering for the face or head; disguise or protection
Example
She wore a mask to protect herself from dust.
彼女はほこりから自分を守るためにマスクをしていました。
C1 noun /ˈmɔːrtər/

mortar

レンガをつなげるための混合物 / 小さな大砲
Meaning
a mixture used in building to bond bricks or stones together; also, a small cannon for firing shells
Example
The workers applied mortar between the bricks.
作業員たちはレンガの間にモルタルを塗りました。
B2 noun /maɪˈnɔːr.ɪ.ti/

minority

少数派
Meaning
A smaller number or part, especially a group differing from the majority.
Example
The law aims to protect the rights of ethnic minorities.
この法律は、民族的少数派の権利を保護することを目的としています。
B2 noun /ˌmænjəˈfæktʃərɪŋ/

manufacturing

製造業
Meaning
the process of making products on a large scale using machinery
Example
The country is investing heavily in the manufacturing sector.
その国は製造業に大規模に投資しています。
B2 noun /ˈmɛntɔːr/

mentor

メンター
Meaning
an experienced person who advises and guides someone less experienced
Example
She acted as a mentor for the new employees.
彼女は新しい社員のためにメンターとして活動しました。
C1 adjective /ˈmɑːr.dʒɪ.nəl/

Marginal

周辺の; 最小の; わずかな
Meaning
relating to or situated at the edge; minimal; slight
Example
The marginal improvement in sales was barely noticeable.
売上のわずかな改善はほとんど気づかれませんでした。
B2 verb /ˈmeməraɪz/

memorize

暗記する
Meaning
to learn something by heart; to commit to memory
Example
Students need to memorize important formulas for the exam.
学生は試験のために重要な公式を覚える必要があります。
C1 noun /ˈmɪmɪkri/

mimicry

模倣
Meaning
The act of imitating someone or something, often for humor or learning.
Example
The comedian’s mimicry of celebrities made the audience laugh.
コメディアンの有名人の模倣で観客を笑わせました。
C1 noun /ˈmɒn.ɑːk/

Monarch

君主
Meaning
a sovereign ruler, especially a king or queen
Example
The monarch addressed the nation on television.
モナークはテレビで国民に演説を行いました。
A2 noun /mɪˈsteɪk/

Mistake

間違い; エラー;
Meaning
An action or judgment that is misguided or wrong; an error
Example
Making mistakes is part of the learning process.
間違いをすることは学習過程の一部です。
B1 noun /ˈmoʊ.ʃən/

Motion

動き; 移動の行動
Meaning
the action of moving or being moved; a formal proposal
Example
The car was in constant motion during the journey.
その車は旅の間、常に動いていました。
B1 noun /ˈmɑː.kɪ.tɪŋ/

Marketing

マーケティング, 広告, プロモーション
Meaning
The activity, set of institutions, and processes for creating, communicating, delivering, and exchanging offerings that have value for customers, clients, partners, and society at large.
Example
Digital marketing has transformed business strategies.
デジタルマーケティングはビジネス戦略を変革しました。
C2 noun, verb /ˈmaɪər/

mire

Meaning
A stretch of swampy or boggy ground; as a verb, to entangle or involve someone in a difficult situation.
Example
The car was stuck in the mire after the heavy rain.
B2 noun /ˌmɪs.ʌn.dəˈstæn.dɪŋ/

Misunderstanding

誤解
Meaning
A failure to understand something correctly; a disagreement or confusion between people
Example
The argument was caused by a simple misunderstanding.
その議論は単純な誤解から生じた。
C2 adjective /ˈmɒtld/

mottled

斑点模様の
Meaning
Marked with spots, streaks, or blotches of different shades or colors.
Example
The snake's mottled skin helped it blend into the forest floor.
ヘビの斑点模様の皮膚は、森の床に溶け込むのを助けました。
C1 noun /ˈmuːdi.nəs/

moodiness

気まぐれ
Meaning
The state of being frequently subject to changes in mood, especially irritability or sadness.
Example
Her moodiness made it difficult to predict how she would react.
彼女の気まぐれは、彼女がどのように反応するかを予測するのを難しくしました。
C1 noun /mɪˈsɑːdʒəni/

misogyny

女性嫌悪
Meaning
Hatred of, contempt for, or prejudice against women.
Example
The novel has been criticized for promoting misogyny.
その小説は女性嫌悪を助長すると批判された。
C2 adjective /ˈmʌsti/

musty

湿っぽい、カビ臭いまたは湿気のある匂い
Meaning
having a stale, moldy, or damp smell
Example
The old books had a musty odor.
古い本にはカビ臭い匂いがあった。
C1 verb /məˈnuː.vər/

manoeuver

Meaning
To move skillfully or carefully; to guide or manipulate into a desired position.
Example
The driver skillfully manoeuvered the car through the narrow street.
A1 verb /meɪk/

make

作る
Meaning
to create, produce, or construct something
Example
I make coffee every morning.
私は毎朝コーヒーを作ります。
C1 noun /ˈmɒdɪfaɪər/

modifier

修飾語
Meaning
a word or element that changes, limits, or describes the meaning of another word; something that alters or adjusts
Example
In the phrase 'very cold', 'very' is a modifier of 'cold'.
「very cold」という句では、「very」は「cold」を修飾する語です。
C1 noun /ˈmʌltɪplaɪər/

multiplier

乗数
Meaning
a number or factor by which another number is multiplied; something that increases the effect or value of something else
Example
In economics, government spending can act as a multiplier for economic growth.
経済学では、政府支出が成長の乗数となることがある。
C1 adjective məˈdʒes.tɪk

Majestic

壮大な
Meaning
Having impressive beauty, dignity, or grandeur; regal and stately in appearance.
Example
The majestic Himalayas stand tall against the sky.
壮大なヒマラヤ山脈は空に向かって高くそびえ立っています。
C2 noun /ˈmiːliərɪzəm/

meliorism

改良主義
Meaning
The belief that the world tends to improve and that humans can aid its betterment.
Example
Her philosophy of meliorism kept her hopeful during difficult times.
彼女の改良主義的な哲学は、困難な時期に彼女を希望に満ちた状態に保ちました。
C2 adjective /ˈmiː.di.əl/

medial

内側
Meaning
Situated in or pertaining to the middle; located toward the midline of the body or structure.
Example
The medial side of the knee is more prone to injury.
膝の内側は怪我をしやすい。
C1 verb /mæʃ/

mash

潰す
Meaning
to crush or mix food into a soft mass, usually by pressing or beating
Example
She mashed the potatoes before serving dinner.
彼女は夕食を出す前にジャガイモを潰した。
C1 noun ˌmɒdɪfɪˈkeɪʃn

modification

修正
Meaning
The action of making changes to something.
Example
The plan required modification.
計画には修正が必要でした。
A2 noun /maɪl/

mile

マイル
Meaning
a unit of distance equal to 1,609.34 meters; a long distance figuratively
Example
She walked a mile to reach the bus stop.
彼女はバス停に着くために1マイル歩いた。
C2 verb /məˈtrɪkjʊˌleɪt/

matriculate

Meaning
To enroll as a student in a college or university.
Example
She matriculated at Oxford University last year.
C1 adjective /ˈmɪnəskjuːl/

minuscule

微細
Meaning
extremely small in size or importance
Example
She made only a minuscule contribution to the project.
彼女はプロジェクトにほんのわずかな貢献をしました。
B2 adjective /mɪˈsteɪkən/

mistaken

間違った
Meaning
wrong or incorrect because of an error in judgment or understanding
Example
I was mistaken about the meeting time.
私は会議の時間を間違えていました。
C1 noun ˈmɑːrdʒɪnəlaɪzd ˌɪndɪˈvɪdʒuəlz

marginalized individuals

疎外された個人
Meaning
People who are treated as insignificant or peripheral to society, often excluded from mainstream social, economic, or political activities.
Example
Marginalized individuals often face severe challenges.
疎外された個人はしばしば重大な課題に直面します。
B1 noun /ˈmeɪkər/

maker

創造者
Meaning
a person or thing that makes or produces something
Example
He is a famous movie maker in Hollywood.
彼はハリウッドの有名な映画製作者です。
C1 adjective /məˈlɛvələnt/

malevolent

悪意のある
Meaning
Having or showing a wish to do evil or harm to others.
Example
The malevolent glare in his eyes frightened the children.
彼の目に浮かぶ悪意のある視線は子供たちを怖がらせた。
C1 noun /ˌmaʊntəˈnɪə/

mountaineer

登山者
Meaning
A person who climbs mountains as a sport or profession.
Example
The mountaineer reached the summit after a long climb.
登山者は長い登山の後、頂上に到達しました。
C1 noun ˌmɛtə ˈmɔːfəsɪs

metamorphosis

変容
Meaning
A change of the form or nature of a thing or person into a completely different one, by natural or supernatural means.
Example
The company's metamorphosis from a small startup to a global leader was remarkable.
その企業が小さなスタートアップから世界的リーダーへと変容したのは驚くべきことだった。
A1 verb /miːt/

meet

会う
Meaning
to come into the presence of; to encounter
Example
I will meet you at the café.
カフェで会います。
C2 noun /ˈmuːn.biːm/

moonbeam

月光
Meaning
A ray of light from the moon.
Example
A moonbeam lit up the quiet forest clearing.
月光が静かな森の開けた場所を照らした。
B2 noun /məˈtʃʊrəti/

Maturity

成熟
Meaning
The state of being mature; full development physically or emotionally
Example
With age comes wisdom and emotional maturity.
年齢とともに知恵と感情的成熟が訪れる。
C2 noun /ˌmjuːtəˈbɪləti/

mutablility

変化性（綴り間違い）
Meaning
A misspelled form of 'mutability', meaning the quality of being changeable.
Example
The document contained the misspelled word 'mutablility' instead of 'mutability'.
その文書には 'mutability' の代わりに 'mutablility' の綴り間違いがありました。
A2 noun/adjective /ˈmɛksɪkən/

mexican

幸せ
Meaning
a native or inhabitant of Mexico; relating to Mexico or its people, culture, or language
Example
She enjoys Mexican food like tacos and enchiladas.
彼女は賞を受け取ったとき、幸せを隠すことができませんでした。
C1 verb /ˈmɪŋɡl/

mingle

Meaning
to mix or combine; to move among people and engage socially
Example
Guests mingled at the party, chatting and laughing together.
C1 verb /ˈmɛzməˌraɪz/

mesmerize

魅了する
Meaning
To capture complete attention; to hypnotize or fascinate.
Example
The dancer's graceful movements mesmerized the audience.
ダンサーの優雅な動きは観客を魅了しました。
C2 noun /ˈmɪsəl/

missal

ミサの書
Meaning
a book containing the texts used in the Catholic Mass throughout the year
Example
The priest read from the missal during the ceremony.
祭司は儀式中にミサの書から読んでいました。
C2 noun /mjuːˈlætoʊ/

mulatto

混血の人（古くて攻撃的な言葉）
Meaning
an outdated and now offensive term historically used to describe a person of mixed white and Black ancestry
Example
The word 'mulatto' is now considered outdated and offensive.
'ムラット'という言葉は、現在では時代遅れで攻撃的だと見なされています。
C2 noun /maɪˈkrɒmɪtər/

micrometer

マイクロメーター
Meaning
A device used for measuring small distances with great accuracy.
Example
The engineer used a micrometer to measure the thickness of the wire.
エンジニアはワイヤーの厚さを測るためにマイクロメーターを使いました。
A2 noun /ˈmɒn.stər/

Monster

怪物; 残酷な人
Meaning
a large, ugly, and frightening imaginary creature; a cruel person
Example
The children were scared of the monster under the bed.
子供たちはベッドの下の怪物を怖がっていた。
C1 noun /mɑːrˈsuːpiəl/

marsupial

袋で子供を育てる哺乳類
Meaning
A type of mammal that carries and nourishes its young in a pouch, like kangaroos and koalas.
Example
The kangaroo is a well-known marsupial.
カンガルーはよく知られたマースピアルです。
A2 noun /ˈmoʊtər/

motor

モーター
Meaning
a machine that produces motion or power to make something work
Example
The car’s motor stopped suddenly.
車のモーターは突然止まりました。
B2 noun /ˈmæt.rəs/

Mattress

マットレス
Meaning
a large rectangular pad for supporting the reclining body, used as or on a bed
Example
We bought a new mattress for our bedroom.
私たちは寝室のために新しいマットレスを買いました。
C1 noun /məˈnɒɡəmi/

monogamy

一夫一妻制
Meaning
The practice of being married to or in a relationship with only one person at a time.
Example
Many cultures encourage monogamy as the ideal form of marriage.
多くの文化は一夫一妻制を理想的な結婚形態として奨励しています。
C2 noun /ˌmɛtəmˌsaɪˈkoʊsɪs/

metempsychosis

魂の転生
Meaning
The supposed transmigration of the soul, especially its reincarnation after death.
Example
Ancient philosophers often debated the idea of metempsychosis.
古代の哲学者たちは、しばしば魂の転生について議論していました。
C1 noun /ˈmætɪneɪ/

matinee

午後の公演
Meaning
A performance, especially a play or movie, that takes place in the afternoon.
Example
We bought tickets for the Sunday afternoon matinee.
私たちは日曜日の午後の公演のチケットを買いました。
B2 noun /məˌnɪp.jəˈleɪ.ʃən/

manipulation

操作
Meaning
The action of manipulating someone or something in a skillful manner; handling or controlling in a subtle, unfair, or unscrupulous way.
Example
Media manipulation influences public opinion.
メディア操作は公共の意見に影響を与えます。
C1 verb /məˈruːn/

maroon

無人島に取り残す
Meaning
to leave someone trapped and isolated, especially on an island
Example
The sailors were marooned on a deserted island.
水夫たちは無人島に取り残されました。
C1 noun /mɔːs/

Moss

苔
Meaning
a small flowerless plant that grows in clumps in moist places
Example
Green moss covered the old stone wall.
緑の苔が古い石の壁を覆っていました。
C1 adjective /məˈroʊs/

morose

陰鬱
Meaning
sullen, gloomy, or ill-tempered
Example
He became morose after losing his job.
彼は仕事を失った後、落ち込んでしまった。
C1 noun ˌmɪsˈmænɪdʒmənt

mismanagement

不適切な管理
Meaning
Bad or careless management of something.
Example
Mismanagement of plastic waste worsens pollution.
プラスチックごみの不適切な管理が汚染を悪化させます。